Android检查手机上是否安装了第三方软件的方法------本文以百度地图为例

package com.example.myapi.thirdbaidumap;

import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

import com.example.myapi.R;

/**
* 测试程序跳转到第三方地图，并将数据传递过去。
* @author tony
*
*/
public class ThirdBaiduMapTestActivity extends Activity implements OnClickListener{
private Button btn_test;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.thirdbaidumaptest);
btn_test = (Button)findViewById(R.id.baidu_btn_test);
btn_test.setOnClickListener(this);
}

@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.baidu_btn_test:
//如果已安装,

if(isAvilible(this,"com.baidu.BaiduMap")){//传入指定应用包名
Intent intent = null;
try {
//                    intent = Intent.getIntent("intent://map/direction?origin=latlng:34.264642646862,108.95108518068|name:我家&destination=大雁塔&mode=driving®ion=西安&src=yourCompanyName|yourAppName#Intent;scheme=bdapp;package=com.baidu.BaiduMap;end");
intent = Intent.getIntent("intent://map/direction?" +
"origin=大柏树&" +
"destination=江湾镇" +
"&mode=driving&" +
"region=上海市" +
"&src=yourCompanyName|yourAppName#Intent;scheme=bdapp;package=com.baidu.BaiduMap;end");
startActivity(intent); //启动调用
} catch (URISyntaxException e) {
Log.e("intent", e.getMessage());
}
}else{//未安装
//market为路径，id为包名
//显示手机上所有的market商店
Uri uri = Uri.parse("market://details?id=com.baidu.BaiduMap");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
break;
}
}
/**
* 检查手机上是否安装了指定的软件
* @param context
* @param packageName：应用包名
* @return
*/
private boolean isAvilible(Context context, String packageName){
//获取packagemanager
final PackageManager packageManager = context.getPackageManager();
//获取所有已安装程序的包信息
List<PackageInfo> packageInfos = packageManager.getInstalledPackages(0);
//用于存储所有已安装程序的包名
List<String> packageNames = new ArrayList<String>();
//从pinfo中将包名字逐一取出，压入pName list中
if(packageInfos != null){
for(int i = 0; i < packageInfos.size(); i++){
String packName = packageInfos.get(i).packageName;
packageNames.add(packName);
}
}
//判断packageNames中是否有目标程序的包名，有TRUE，没有FALSE
return packageNames.contains(packageName);
}

}